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Solar system snip.PNG

Constellation


Eclipse

http://www.mreclipse.com/MrEclipse.html
1.An eclipse is an astronomical event that occurs when an astronomical object is temporarily obscured, either by passing into the shadow of another body or by having another body pass between it and the viewer.
2.The term eclipse is most often used to describe either a solar eclipse, when the Moon's shadow crosses the Earth's surface, or a lunar eclipse, when the Moon moves into the Earth's shadow. However, it can also refer to such events beyond the Earth-Moon system: for example, a planet moving into the shadow cast by one of its moons, a moon passing into the shadow cast by its host planet, or a moon passing into the shadow of another moon. A binary star system can also produce eclipses if the plane of the orbit of its constituent stars intersects the observer's position.
An eclipse is caused when an astrological object is covered by another. If the sun is covered by the moon, it is a solar eclipse. If the moon is covered by the sun, it is a lunar eclipse. An eclipse shrouds a certain area of about ? square kilometres in darkness for about ?.